Mechanics

STALLING

1994 GMC Truck

Electrical problem
1994 GMC Truck V8 Four Wheel Drive Automatic 185000 miles

truck runs fine until you put on brake or turn on head lights then it stalls.
Avatar
Bcam
January 22, 2010.



It sounds like your idle speed while in gear is too low. You may have an idle solenoid not working, or it might be adjusted incorrectly. When you turn an accessory on you load the alternator, thus slowing the engine RPM enough to cause it to stall. Raise the Idle speed.
Mickey-d

Tiny
Mickey-d
Feb 23, 2010.